Method and device for controlling motors in the film and broadcast industry

ABSTRACT

In a method and a device for controlling or regulating motors for movement axes of devices in the film and broadcast sector, at least one motor is controlled via radio or via cable by a control unit of processing unit having at least one control element. An electromechanical element can apply on the control element a force that generates a haptic feedback. This force can be changed dynamically by entered or read-out parameters and can be manually overridden.

The invention relates to a method for controlling or regulating motorsin the film and broadcast sector according to the generic concept ofclaim 1 or 2, and to a device for carrying it out according to thegeneric concept of claim 14 or 15.

STATE OF THE ART

In the film sector, focus, iris and zoom have so far usually beencontrolled electronically via external motors attached to the lenses ofa camera. Using a handheld control unit, which usually has a hand wheelfor the focus, a slider for the aperture and possibly a kind of joystickfor the zoom setting, the user can control up to three motors attachedto the lens from a distance, each of which then controls the focus,aperture and possibly zoom. Data transmission is usually wireless. TheInput devices usually have potentiometers or Incremental encoders which,for example, detect the respective position of the hand wheel and passit on to the motors. Such an input device usually has two fixed endstops. Within the scope of a calibration, these end stops are assignedto the end stops of the lens, i.e. the rotation range of nearly onerotation is assigned to the rotation range of the lens. Deviating fromthis, a small range of the lens can also be assigned to the entirerotation range of the input device in order to be able to control evenmore finely (DE 10 2004 015 947 A1). The same applies to the control ofso-called remote heads (swiveling camera heads), or camera cranes, whichare controlled via either joystick, slider or hand wheels.

PROBLEM DEFINITIONS

There are several problems with the control methods commonly used todate. In the case that the entire rotation range of the input device isonly assigned to a small area of the lens in order to be able to controlit even more finely, there is the problem that only the small area ofthe lens can be controlled with the entire rotation range of the inputarea and not the entire area of the lens. This means that if you want tocontrol a little further beyond this spread range because the situationin front of the camera requires it, you are already at the mechanicalend stop of the hand wheel and cannot turn any further.

Another problem is that the user only gets visual feedback via adisplay, but no haptic feedback at all. There is a known system that, ata certain mark, triggers a small motor with an imbalance, causing theentire handheld control unit to vibrate (ARRI WCU-4 Wireless CompactUnit, USER MANUAL, Dec. 12, 2018). However, this has two disadvantages:The hand wheel itself does not vibrate, but the entire unit does; thus,it is not very intuitive and feels strange or not related to therespective axis (e.g., focus, iris, zoom). In addition, it is difficultto move to the intended position accurately because human reaction timeis too slow for fast control movements. On the other hand, this can onlysignal the mark of a single axis, because if the entire device vibrates,it is not possible to understand which axis is actually involved in thecase of several axes.

Furthermore, a temporary sluggishness of a controlled axis caused e.g.by obstacles, for example a cable being in the way and thus blocking themechanical adjustment device, cannot be shown. In existing systems, anadjustable friction of the adjusting device can only be set mechanicallyfor the entire control element uniformly by changing a lock nut.

Another problem is that if the respective motor on the lens is adjustedmanually in the meantime, the assignment of the position of the lens (orgenerally: the driven mechanics) no longer corresponds to the positionof the hand wheel. So far there are only two possibilities: Arecalibration, through which the end stops of the lens are againassigned to the end stops of the hand wheel, or, as long as the encodersof the respective motor have continuously sent their positions to theinput device, driving the respective motor to the set hand wheelposition. In the example given, however, this also changes the imagecontent due to the now changed focus, iris or zoom setting, which is tobe avoided in most cases. Similar problems also occur with other drivenmechanics.

Furthermore, it is not possible with the present devices to enable anassisted so-called focus pulling (or in another example: an assistedpanning of a camera head). This means that the user is not provided withany assistance for precise focusing (or assistance for precise panningof a camera head), except for the visual indication of the distance ofthe object to be focused from the camera on an external display by meansof distance measuring devices. However, the user is not relieved fromthe focus pulling itself. There are some initial ideas for automaticfocusing, but both modes of operation are mutually exclusive: either theuser operates the focus itself or the automatic system focuses on itsown. The state of the art does not provide for both at the same time.There is only the hard switch between the two modes, which must beactively switched (DE 10 2004 015 947 A1).

Another problem concerns the assignment of real input values to theposition of the input device. Although there are approaches to place adisplay on a cylinder sector of the hand wheel, this is limited to thewidth of the two end stops (DE 10 2011 121 021 A1).

DE 197 12 049 A1 describes an operating device for manual input ofinformation into a device. US 2003/0184,518 A1 describes a device withhaptic feedback, which consists of an operating unit, a drive elementgenerating the haptic feedback and a control unit for the drive element.DE 10 2015 110 633 A1 discloses a haptic operating unit and a method foroperating vehicles, wherein a haptic operating device with a rotary unitis used and selectable menu items are displayed on a display unit, andwherein a menu item is selected by rotating the rotary unit. US 2007/0279401 A1 describes a system and method for a rotary movement in a hybridhaptic device comprising a knob rotatably mounted on a base plate via ashaft.

All four of the latter publications have in common that the methods anddevices described therein merely imitate mechanical behaviorelectronically.

SOLUTION

The problems of the above limitations are solved by the features ofmethod claim 1 or 2 or respectively device claim 14 or 15.

The present invention relates to the control or regulation of motors viaradio or cable, at least indirectly, for movement axes of devices in thefilm or broadcast sector comprising a processing unit and an operatingunit, such as a handheld unit. Hereby, the axes of movement are fixed toa mechanical system by two limits/end stops. In this case, the operatingunit comprises at least one control element with a built-inelectromechanical element which can generate a dynamic haptic feedbackon this control element. The control element may be a hand wheel, aslider or a joystick. The electromagnetic element can be a brushlessmotor, for example, which can exert a force on the control element byinput or read parameters, possibly via a gearbox, can be dynamicallyvariable, and can further be manually overridden. Such a parameter canbe the distance of an object to the recording camera, but also a changeof state of the object, e.g. a bursting of a balloon, where at thismoment the focus should be on another object.

The method and the device for carrying it out will be described belowusing the hand wheel as an example. Of course, the principles explainedcan be transferred analogously to a slider or a joystick. The rotarymovement is then a linear movement in the case of the slider and thedeflection from the zero point in the case of the joystick.

The invention provides that the hand wheel is equipped with a suitablemotor and, optimally, rotation angle sensors for the incremental orabsolute position of the hand wheel. By means of parameters entered orread out at further devices or motors, this force on the hand wheel isto be dynamically adjustable. By “dynamic” it is also understood that acertain state of the force on the hand wheel does not have to changeover a certain period of time, but can nevertheless be changed at anytime without mechanical intervention by the user (i.e. withoutreadjusting the friction of a hand wheel by means of an adjusting screw)and be set into another state.

If the force calculated by the processing unit is applied to the handwheel, the hand wheel is either blocked or more sluggish for the user,or it supports turning by hand or moves by itself to a certain positionor at a defined speed in a certain direction. If no such force isapplied to the hand wheel, the hand wheel is free to rotate for the userwithout much resistance and can be used similarly to a normal handwheel. The force on the hand wheel can be adjusted individually anddynamically with the corresponding parameters. Nevertheless, it ispossible for the user to superimpose an additional force on the handwheel, whereby a processing unit may be able to detect this superimposedforce and, if necessary, react accordingly, as will be explained laterwith examples. Input or read-out parameters can be calculated by theprocessing unit from the values of a distance sensor of recordingobjects to the camera or from the object to be controlled (for example,the distance of an actor to the camera or to a spotlight controlled bythe device according to the invention). From this, a static or dynamicsignal is generated, which is transmitted via radio or cable and is usedto control the motor built into the control element, which generates theforce for the haptic feedback on the control element.

The method and device of the invention can simulate virtual end stops(FIG. 3: A). For example, if the user turns the hand wheel 4 past an endstop (FIG. 3: x₁ or x₂), a counterforce is generated and the hand wheelmoves back “resiliently”. The counterforce can also be so strong thatthe user can no longer move the hand wheel beyond the stop point.

Any “marks” (FIG. 3: B; C; D) can be set. These can be transmitted tothe control element as haptic feedback. In this way, a mechanicalresistance dip can be created: If the mark on the hand wheel comes intothe immediate vicinity of the reference point 3 by rotation, the mark is“attracted” and thus the rotation of the hand wheel is accelerated untilit is at the extreme point (FIG. 3: x_(B)), after which a counterforceis built up which becomes weaker and weaker the further the mark movesaway from the reference point. This simulates a dip or “hole” (FIG. 3:B). There is also the reverse case. An increasing resistance can besimulated: The closer the mark gets to the reference point, the strongera counterforce becomes, until the peak is reached (FIG. 3: x_(C)), fromthen on it behaves the other way round (FIG. 3: C). Any pattern (raisedor recessed plateau, rattle, checker plate, signals similar to Morsecode, vibration, dynamic or static sluggishness/smoothness, monitoringof a defined intermediate area (FIG. 3: D), etc.) can also be simulated.

A dynamic friction when turning the hand wheel, which can be adjustedelectronically, does not exist so far. Therefore, the invention alsoprovides for simulating any kind of lightness or sluggishness of amovement axis on the hand wheel. For example, by measuring the requiredcurrent on the motor, it can be determined how stiff an axis is or howmuch load is applied to it. A processing unit can readjust this byapplying an appropriate counterforce to the hand wheel. Thus, it acts asif the actual sluggishness of an axis (and thus the force that a motormust apply) is transferred to the hand wheel. This behavior can beprovided with a scaling factor as desired (i.e. strengthen or weaken) orcan be designed dynamically according to certain specifications or otherinfluencing factors.

In order to provide the user with the assignment of the hand wheelrotation to the current values on the lens or a mechanical movement axis(e.g. remote head on a camera crane) at any time, so far only a manuallyinscribable ring has been used, which can at best be updated byrewriting or replacing it. In order to hit certain markings (marks) orto get current information about the state or sluggishness of themotor-driven motion axis, a display or so-called ePaper can be used,which is arranged next to the control element (completely encompassesthe hand wheel) and displays the positions of the objects (objectassignment) or other information. In contrast to DE 10 2011 121 021 A1,this display is arranged practically seamlessly around the rotatingcylinder of the hand wheel to enable, for example, several rotations ofthe hand wheel to be used for the entire adjustment range of the lens.The scale on the display updates automatically depending on the motorposition, so that the entire range of the lens or motor axis can bemapped to several rotations. I.e. the same physical position on the handwheel is thus reused several times, but with correspondingly differentdisplay values. These display values are updated automatically,depending on the position of the hand wheel. An update of the displayvalues is also provided if the lens type/axis type changes. This isentered by the user or, optimally, automatically detected. It is alsopossible to have a dynamic scale that visualizes the respectiveresistance of the motor axis (FIG. 5) or displays symbols or texts forcertain objects in front of the camera (FIG. 2). In this way, actors'positions can be linked to symbols or texts, with the symbols/textsmoving dynamically on the display unit depending on the distance of thereal actors from the camera. A display can then be used to select whichobject in front of the camera is to be followed. This can be selectedfrom the available objects via touch screen, keys or other inputoptions. For example, an actor can be selected, which is then tracked bythe distance measuring device and appears on a display on either thecontrol panel or the control element. If he moves in front of the cameraand thus changes his distance from the camera, the mark (can also be adescriptive text or an icon) on the display of the hand wheel also moveswith him, so that the mark can be followed manually or In the assistedexecution mode. In addition, the area around the point of focus can bedisplayed where the depth of field is the same (depth-of-field range).This allows for very simple operation, as the user only needs to ensurethat the object is within the depth-of-field range by appropriateoperation.

An assisted execution mode is also possible. In this mode, the controlelement can independently execute movements (e.g. the hand wheel canrotate), controlled by a computing unit, i.e. move independently todefined points at a defined speed. For example, when the motor on theaxis of movement is adjusted by hand and the hand wheel rotatesanalogously, or when a distance sensor 13 determines the distance to anobject 14 (e.g. O₁ or O₂) in front of the camera or another devicespecifies a certain setting for the respective motor 11 or respectivemotors (FIG. 1). On the hand wheel, the assignment of the object to aparticular distance is called object assignment 21. The area directlyadjacent to or surrounding the object assignment is called objectassignment area 22 (FIG. 2). This can be defined in the settings on thecontrol unit and/or the processing unit.

Even in the assisted execution mode, the user has the possibility tointervene and override at any time without active switching. Two casesare possible: in the first case, the control element (in this example,the hand wheel 4) moves by itself and the user can override or readjustthe predetermined position in addition to the executed movement of thecontrol element; in the second case, the control element does not moveby itself (but the controlled motor 11 does) and the user can add orsubtract additional movements to the movement already executed by theprocessing unit on the motor by moving the control element accordingly.By means of the following example, both cases will be explained: In bothcases, an actor 14 (e.g., O₁), approaching the camera is to be kept infocus. A distance sensor 13 continuously measures the distance of theactor 14 (e.g. O₁) to the camera 12. In the first case, the processingunit continuously adjusts the focus according to the distance and movesthe hand wheel analogously. The user nevertheless has the possibility tomake corrections to the value given by the processing unit byessentially allowing himself to be guided by the moving hand wheel, butdepending on the situation he can change the focus point by applyingadditional positive or negative force to over- or under-control the handwheel rotation. In the second case, the processing unit also guides theactor's focus depending on the distance, but does not move the handwheel to do so. The user now has the option of adding or subtracting anoffset to the feed performed by the processing unit with positive ornegative rotations around the current point. To make this moreuser-friendly, the zero point (i.e. the point at which the additionaloffset is zero) can be located in a dip (FIG. 3: x_(B)).

In order to enable a further variant of the supported execution mode ofthe hand wheel (i.e., for example, to follow an object 14 with thefocus), it is possible to apply a force predetermined by the processingunit to the rotation of the hand wheel in a positive or negativedirection, which keeps the user at the correct focus value in a strengthdetermined by setting (similar to a correspondingly sensed magneticattraction from the object to be followed to the reference point in adefined radius around the object assignment on the hand wheel).Nevertheless, this is not automatic operation in the classical sense.For it is possible to stop the automatic rotation at any time eventemporarily by manual intervention (this can also be done by activelyoverriding from the sphere of influence surrounding the objectassignment 21 to be tracked and within which tracking takes place), andat that moment the tracking of the object can be switched off with theappropriate presetting.

It is also possible to activate the assisted mode temporarily, forexample, when changing one's grip on the hand wheel by making certaingestures on a control element, in order to ensure continuous operation.

Gestures can be understood as evaluating the impulse or force with whichthe user turns or stops the hand wheel. Alternatively, this can beunderstood as the pressure on a possibly pressure-sensitive button.Instead of the button, a sensor on the hand wheel can also detect whenthe hand releases the hand wheel.

If an object O₁ is being tracked in the supported execution mode and thetracking is to be changed to another object O₂, the user can leave thefirst object assignment range by applying a defined additional force tothe rotation of the hand wheel and actively change to the second objectassignment range while rotating. There, the supported execution mode nowfocuses on the object O₂ to be tracked and from now on this object istracked further. Alternatively, an object change can also be performedby selection on a screen (e.g. touch screen) 2 or 5.

Instead of automatically focusing on a previously defined point of theobject when entering the object mapping area (e.g. automaticallyfocusing on the actors eyes as soon as entering the object mappingarea), it is also possible to retain the last setting of the manualfocus pull and thus a thereby defined offset to the defined point of theobject (e.g. shortly after entering the object mapping area, the back ofthe head was manually focused with an offset to the actors eyes). Thisoffset is then maintained during the supported execution mode.

In a further assisted execution mode, no force is exerted by theprocessing unit on the rotation of the hand wheel as long as the objectspecified by the user is within the depth-of-field range (in this range23, all objects located even at different distances are in focus). Ifthere is a risk that the user will leave the depth-of-field range 23,the processing unit can ensure that this range is not inadvertently leftby exerting an appropriate supporting force on the hand wheel. Only whenthe user leaves the range with a correspondingly strong force, theprocessing unit switches off this range limit monitoring supportingmode. This can also be switched off only temporarily and switched onagain as soon as a new object enters the depth-of-field range.

Furthermore, it is possible to show the plane-of-focus, thedepth-of-field (calculated or measured), the subjects in the shootingset or other useful information on the circumferential display 5 of thehand wheel 4 or the display 2 of the control unit. In this case, thedisplay 5 can either be fixedly connected to the operating part 1, whilethe display is updated sufficiently quickly and only the hand wheel 4rotates, or the hand wheel and the circumferential display 5 are oneunit and rotate together.

The display on one of the screens can show a bird's eye view or a sideperspective symbolically or superimposed on the current video image. Inthis way, for example, the limits of the focus zone are visible to theuser and he can orient himself accordingly during operation. For bettervisualization, these areas can also be projected into the recording setusing a laser or other optical projection mechanism.

It should be emphasized once again that all the methods or devicesexplained using the example of the hand wheel can also be appliedanalogously, with adaptations, to other control elements, e.g. a slideror a joystick. In the case of a slider, for example, instead of therotation applied to several rotations in the case of the hand wheel, theslider can return to its initial position after deflection in ananalogous manner.

The aforementioned invention can be used in all areas of film andbroadcast. For example, support can be provided for setting lensparameters, operating motion control applications (e.g. swiveling camerahead, camera dollies, camera cranes, swiveling light control systems)and other areas of application. In times of higher and higher imageresolution, this helps to focus precisely and exactly or to designworkflows much faster. In addition, the brightness of spotlights or thelike can be controlled. The invention can also be used in other areas oftechnology.

FIGURE DESCRIPTION

FIGS. 1 to 5 show examples of the device according to the invention aswell as force and resistance curves in the process according to theinvention.

FIG. 1 shows a control unit 1 with a display 2, which has the followingcontrol elements: a hand wheel 4, a slider 7 and a joystick 8. Acircumferential display 5 is mounted on the hand wheel 4. A display 15is also attached to the slider and a display 16 is attached to thejoystick (rocker). A reference point 3, which is fixedly mounted on thecontrol unit 1, indicates the current state of the motor 11 (for amovement axis of the lens 17) on the circumferential display 5. A motorcapable of exerting a force on a control element is shown, by way ofexample, as a motor 6 in the hand wheel 4. This may also be present inthe slider 7 or joystick 8. Via a radio or cable connection 9, thecontrol unit 1 is connected to a motor 11 for driving an axis of a lens17 via a processing unit 10. The processing unit 10 may alternatively behoused in the control unit 1. A distance meter 13 attached to the camera12 continuously measures the distance to recording objects 14 (O₁, O₂).

FIG. 2 shows a section of the circumferential display 5. The referencepoint 3 is fixed to the control unit 1, while the circumferentialdisplay 5 in this variant can rotate with the hand wheel 4. Thereference point 3 here shows the current setting on an object. Thedashed lines 21 show object assignments, i.e. the assignment of a realobject (in this case of the actor “Michael” and the actress “Anna”respectively) to a symbol on the hand wheel 4. A defined area around oneparticular object assignment 21 is called the object assignment area 22of the object (dark background area of the name). The depth-of-fieldarea 23 is highlighted in gray and is located around the reference point3 depending on the calculated depth-of-field.

FIG. 3 shows a graphical representation of the action of a force F,given by the processing unit 10, on the rotary movement as a function ofthe hand wheel rotation position x. At the position x₁ and x₂, end stopsare shown which define the outer limits of the entire adjustment range Aand at which the counterforce on the hand wheel 4 increases abruptly. Inthe area in between, different force patterns are shown. Area B shows a“dip” where the force on the hand wheel given by the processing unit 10increases as the extreme point x_(B) is approached (this may be thedesired focus point on an object/object assignment point 21), area Cshows a “hill” with the extreme point x_(C) and thus the reverse case.Area D shows the supporting force that keeps the user in a certain areae.g. depth-of-field area, and at the borders protects againstaccidentally leaving the area.

FIG. 4 shows an example of a dynamic resistance R which depends on theposition x of the hand wheel 4. It increases steadily towards the outerlimits x₁ and x₂. In the intermediate area, the changing resistance of amechanical axis is shown, as it can occur in the case oflocation-dependent sluggishness, can be determined by reading out themotor current and can be converted by the processing unit 10 intocorresponding forces on the hand wheel 4.

FIG. 5 shows a section of the circumferential display 5. As in FIG. 2,the reference point 3 is fixed to the control unit 1, while in thisvariant the circumferential display 5 can rotate with the hand wheel 4.The dashed line 31 graphically shows the resistance of the mechanicalaxis of movement as a function of the position of the hand wheel.

REFERENCE LIST

-   -   1 Control unit    -   2 Display on the control unit    -   3 Reference point    -   4 Hand wheel    -   5 Circumferential display    -   6 Hand wheel motor (electromechanical element)    -   7 Slider    -   8 Joystick (Rocker)    -   9 Cable or radio connection    -   10 Processing unit    -   11 Motor    -   12 Camera    -   13 Distance sensor    -   14 Recording object (here O₁ and O₂)    -   15 Display on the slider    -   16 Display on joystick (rocker)    -   17 Lens    -   21 Object assignment    -   22 Object assignment area    -   23 Depth-of-field    -   31 Graphical representation of the mechanical resistance    -   A Total adjustment range    -   B Simulated dip    -   C Simulated hill    -   D Area in which an object is to be held    -   X Hand wheel rotation position    -   x₁, x₂ End stops    -   x_(B), x_(C) Extrema    -   F force on the hand wheel    -   R Resistance of a movement axis

What is claimed is: 1.-19. (canceled)
 20. A method for controlling orregulating a motor for movement axes of devices in the film andbroadcast sector, comprising: controlling at least one motor via radioor cable with a control element by applying a force to the controlelement with an electromechanical element that generates a hapticfeedback, and dynamically changing the force using entered or read-outparameters generated in dependence on a recording object or a changingstate of the recording object or of a state of at last one deviceselected from a motion control device, a swiveling camera head, a cameradolly, a camera crane, and a light control system, while allowing a userto manually override the force.
 21. The method of claim 20, wherein theforce generated by the electromechanical element on the control elementat a certain time or depending on the position of the control element ora position of the recording object, or a combination thereof, is low orsubstantially non-existent, allowing the control element to be operatedwithout resistance noticeable to the user, and wherein at another timeor at another position of the control element or at another position ofthe recording object, or a combination thereof, an individuallyadjustable or dynamic force is applied to the control element.
 22. Themethod of claim 20, wherein the haptic feedback indicates an end stop ora limitation of a rotational range or of a sliding range or adjustmentrange, or a combination thereof.
 23. The method of claim 20, wherein thehaptic feedback represents a mark or a force pattern or emulates amechanical behavior.
 24. The method of claim 20, wherein theelectromechanical element exerts on the control element a force whichcauses the control element to move automatically to defined points at adefined speed, with the user being able to intervene and to manuallyoverride at any time without actively switching when necessary.
 25. Themethod of claim 20, further comprising determining at least one of theinput or read-out parameters from the position of the recording objectdetected by a distance sensor.
 26. The method of claim 20, furthercomprising displaying and dynamically adjusting the position of therecording object on a display attached to a control unit or to thecontrol element, and marking the recording object as an active object.27. The method of claim 20, further comprising selecting the recordingobject on a touch screen of the control unit or the control element, andtracking the selected recording object.
 28. The method of claim 20,wherein the electromechanical element applies the force on the controlelement when a tracked selected recording object that is held in adepth-of-field range or in another defined range threatens to leave thedepth-of-field range or the other defined range.
 29. The method of claim20, wherein the electromechanical element applies the force on thecontrol element when the user moves the control element into apredetermined area around a tracked selected recording object.
 30. Themethod of claim 20, further comprising when the control element isdesigned as a hand wheel having a circumferential display, displaying acurrent display range on the circumferential display, continuouslyupdating a visible portion of the current display range when a totalsetting range is spread over several rotations of the hand wheel. 31.The method of claim 20, further comprising projecting information into arecording set based on the entered or read-out parameters in dependenceon the recording object or the changing state of the recording object orof the device, wherein the projected information does not interfere witha recording image.
 32. A method for controlling or regulating a motorfor movement axes of devices in the film and broadcast sector,comprising: controlling at least one motor via radio or cable with acontrol element by applying a force to the control element with anelectromechanical element that generates a haptic feedback, anddynamically changing the force using entered or read-out parameters,with one of the parameters representing manual turning of a hand wheelby the user or an input from the control element, calculating a dynamicforce which supports the manual turning or turns the hand wheelautomatically to a certain position or in a certain direction at adefined speed, while allowing a user to manually override the force. 33.The method of claim 32, wherein the force generated by theelectromechanical element on the control element at a certain time ordepending on the position of the control element or a position of therecording object, or a combination thereof, is low or substantiallynon-existent, allowing the control element to be operated withoutresistance noticeable to the user, and wherein at another time or atanother position of the control element or at another position of therecording object, or a combination thereof, an individually adjustableor dynamic force is applied to the control element.
 34. The method ofclaim 32, wherein the haptic feedback indicates an end stop or alimitation of a rotational range or of a sliding range or adjustmentrange, or a combination thereof.
 35. The method of claim 32, wherein thehaptic feedback represents a mark or a force pattern or emulates amechanical behavior.
 36. The method of claim 32, wherein theelectromechanical element exerts on the control element a force whichcauses the control element to move automatically to defined points at adefined speed, with the user being able to intervene and to manuallyoverride at any time without actively switching when necessary.
 37. Themethod of claim 32, further comprising when the control element isdesigned as a hand wheel having a circumferential display, displaying acurrent display range on the circumferential display, continuouslyupdating a visible portion of the current display range when a totalsetting range is spread over several rotations of the hand wheel.
 38. Adevice for controlling or regulating motors for movement axes ofequipment in the film and broadcast sector, said device comprising: aprocessing unit, a control unit having a control element connected atleast indirectly to a motor via radio or cable, and an electromechanicalelement connected to the control element capable of generating a forcethat provides a haptic feedback on the control element, wherein theprocessing unit dynamically changes the force using entered or read-outparameters generated in dependence on a recording object or a changingstate of the recording object or of a state of at last one deviceselected from a motion control device, a swiveling camera head, a cameradolly, a camera crane, and a light control system, and wherein the forcecan be manually overridden on the control element by a user.
 39. Thedevice of claim 38, wherein the control element comprises a hand wheeloperated by the user, one of the parameters representing manual turningof the hand wheel by the user or an input from the control element, saidprocessing unit calculating a dynamic force which supports the manualturning or turns the hand wheel automatically to a certain position orin a certain direction at a defined speed.
 40. The device of claim 38,further comprising an incremental or absolute position sensor disposedin the control element.
 41. The device of claim 38, wherein theelectromechanical element comprises a motor.
 42. The device of claim 38,wherein the control element comprises a hand wheel with acircumferential display displaying a current display range and having avisible portion which is continuously updated when a total setting rangeis spread over several rotations of the hand wheel.
 43. The device ofclaim 41, further comprising a distance sensor, wherein the processingunit is configured to calculate at least one of the entered or read-outparameters from distance values measured by the distance sensor, andgenerate therefrom a static or dynamic signal which is transferred viaradio or cable for controlling the motor that generates the force forthe haptic feedback on the control element.